NSR Saline Dam – Earthworks, HDPE Liner & Pipework

Doolee’s scope included all earthworks, civil, concrete and piping, required to complete the works.

• Saline Dam #3 construction, including overflow pit.
• Lining installation
• Expansion of an existing Scour Pit.
• Removal of existing pump structure and piping
• Removal and reconstruction of road crossings
• Access track construction
• Service corridor construction

Our expertise in civil earthworks for storage facilities allowed for the precise execution of the saline dam’s foundation and containment walls. The saline dam scope mirrors the technical requirements of a tailing storage facility, involving complex earthmoving and high-integrity lining systems.

• Clearing of Heavy Vegetation – approx 49,000m2 including preparation of area, mulching and hauling to stocking
• Bulk Earthworks – win, condition, haul (2km) and placement on embarkment 45,000m3 of fill
• Supply and Installation of Over 20,000 m² of HDPE Lining – 2-layer System, including preparation, welding, testing, and QA documentation
• Construction of Reinforced Concrete Structures approx. 100m3 in total – including pump footings, pipe guides, sump, and electrical substation footings
• Road Crossings – removal of crossings, relocation of live services, installation of culverts and pavement build-up
• HDPE Piping – through the dam wall to pump stations

Challenges

• Staging of works to allow access to work areas
• Unsuitable material existing on work fronts
• Challenging weather conditions

Highlights

• Multi-faceted project
• Quality of work completed
• Works completed safely